The Metropolitan Transportation Authority, which operates mass-transit lines in New York City and the Long Island Rail Road and Metro-North commuter lines, said it was closely monitoring the investigation of the fiery blast that injured 29 people in a West London underground station.

The MTA will expand bag screening and deploy extra police patrols on the LIRR and Metro-North, as well as in midtown Manhattan’s Grand Central Terminal and Pennsylvania Station, “out of an abundance of caution,” spokesman Kevin Ortiz said.

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MTA officials were also consulting with New York City police about bolstering security in the subway system, he said.

New York state Governor Andrew Cuomo said in a statement he had also directed authorities to increase security at airports, bridges, tunnels and other sensitive locations across the state.

“On behalf of all New Yorkers, I condemn the apparent terrorist attack in London today in the strongest possible terms,” Cuomo added.